diff --git a/integration/test_urls.py b/integration/test_urls.py
new file mode 100755
index 00000000000..a72de8aa3dd
--- /dev/null
+++ b/integration/test_urls.py
@@ -0,0 +1,67 @@
+"""Integration tests for all urls in Reflex."""
+import os
+import re
+from pathlib import Path
+
+import pytest
+import requests
+
+
+def check_urls(repo_dir):
+    """Check that all URLs in the repo are valid and secure.
+
+    Args:
+        repo_dir: The directory of the repo.
+
+    Returns:
+        A list of errors.
+    """
+    url_pattern = re.compile(r'http[s]?://reflex\.dev[^\s")]*')
+    errors = []
+
+    for root, _dirs, files in os.walk(repo_dir):
+        if "__pycache__" in root:
+            continue
+
+        for file_name in files:
+            if not file_name.endswith(".py") and not file_name.endswith(".md"):
+                continue
+
+            file_path = os.path.join(root, file_name)
+            try:
+                with open(file_path, "r", encoding="utf-8", errors="ignore") as file:
+                    for line in file:
+                        urls = url_pattern.findall(line)
+                        for url in set(urls):
+                            if url.startswith("http://"):
+                                errors.append(
+                                    f"Found insecure HTTP URL: {url} in {file_path}"
+                                )
+                            url = url.strip('"\n')
+                            try:
+                                response = requests.head(
+                                    url, allow_redirects=True, timeout=5
+                                )
+                                response.raise_for_status()
+                            except requests.RequestException as e:
+                                errors.append(
+                                    f"Error accessing URL: {url} in {file_path} | Error: {e}, , Check your path ends with a /"
+                                )
+            except Exception as e:
+                errors.append(f"Error reading file: {file_path} | Error: {e}")
+
+    return errors
+
+
+@pytest.mark.parametrize(
+    "repo_dir",
+    [Path(__file__).resolve().parent.parent / "reflex"],
+)
+def test_find_and_check_urls(repo_dir):
+    """Test that all URLs in the repo are valid and secure.
+
+    Args:
+        repo_dir: The directory of the repo.
+    """
+    errors = check_urls(repo_dir)
+    assert not errors, "\n".join(errors)
diff --git a/reflex/.templates/apps/blank/code/blank.py b/reflex/.templates/apps/blank/code/blank.py
index 4a1751996e1..8ff44abf19a 100644
--- a/reflex/.templates/apps/blank/code/blank.py
+++ b/reflex/.templates/apps/blank/code/blank.py
@@ -4,7 +4,7 @@
 
 import reflex as rx
 
-docs_url = "https://reflex.dev/docs/getting-started/introduction"
+docs_url = "https://reflex.dev/docs/getting-started/introduction/"
 filename = f"{config.app_name}/{config.app_name}.py"
 
 
diff --git a/reflex/.templates/apps/sidebar/README.md b/reflex/.templates/apps/sidebar/README.md
index 3d7fa13a9d5..d80145d344a 100644
--- a/reflex/.templates/apps/sidebar/README.md
+++ b/reflex/.templates/apps/sidebar/README.md
@@ -62,6 +62,8 @@ In this template, we have a sidebar component in `{your_app}/components/sidebar.
 
 ### Adding State
 
-As your app grows, we recommend using [substates](https://reflex.dev/docs/substates/overview/) to organize your state.
+As your app grows, we recommend using [substates](https://reflex.dev/docs/substates/overview/)
+to organize your state.
+
 You can either define substates in their own files, or if the state is
 specific to a page, you can define it in the page file itself.
diff --git a/reflex/app.py b/reflex/app.py
index 67bf17f517f..dd8eef7953e 100644
--- a/reflex/app.py
+++ b/reflex/app.py
@@ -379,7 +379,7 @@ def _generate_component(component: Component | ComponentCallable) -> Component:
                 raise TypeError(
                     "You may be trying to use an invalid Python function on a state var. "
                     "When referencing a var inside your render code, only limited var operations are supported. "
-                    "See the var operation docs here: https://reflex.dev/docs/state/vars/#var-operations"
+                    "See the var operation docs here: https://reflex.dev/docs/vars/var-operations/"
                 ) from e
             raise e
 
diff --git a/reflex/state.py b/reflex/state.py
index 19cb755a05e..055561c169b 100644
--- a/reflex/state.py
+++ b/reflex/state.py
@@ -278,7 +278,7 @@ def __init__(
         if not _reflex_internal_init and not is_testing_env():
             raise RuntimeError(
                 "State classes should not be instantiated directly in a Reflex app. "
-                "See https://reflex.dev/docs/state for further information."
+                "See https://reflex.dev/docs/state/ for further information."
             )
         kwargs["parent_state"] = parent_state
         super().__init__(*args, **kwargs)
diff --git a/reflex/utils/prerequisites.py b/reflex/utils/prerequisites.py
index d9fb91c32d3..e5d97671172 100644
--- a/reflex/utils/prerequisites.py
+++ b/reflex/utils/prerequisites.py
@@ -1036,7 +1036,7 @@ def show_rx_chakra_migration_instructions():
     )
     console.log("")
     console.log(
-        "For more details, please see https://reflex.dev/blog/2024-02-16-reflex-v0.4.0"
+        "For more details, please see https://reflex.dev/blog/2024-02-16-reflex-v0.4.0/"
     )